Bolt and rivet cutter



(No Model.)

'0. W. LEVALLEY.

Bolt and Rivet Gutter. No. 242,142. Patented May 31,1881.

UNITED STATES PATENT OFFICE.

CHRISTOPHER W. LEVALLEY, OF ST. PAUL, MINNESOTA.

BOLT AND RIVET CUTTER.

SPECIFICATION forming part of Letters Patent No. 242,142, dated May 31, 1881.

Application filed April 16, 1881. (No modem To all whom it may concern:

Be it known that I, CHRISTOPHER W. LE- VALLEY, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Bolt and Rivet (lutters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

This invention relates to improvements in bolt-cutters of that class having a fixed cutter, a sliding cutter, and toggle-levers to advance the sliding cutter. Its object is to simplify the construction and reduce the weight of metal, and at the same time increase the efficiency of the implement by so constructin g the parts that the power shall be centrally applied.

Figure 1 is a side view of a bolt-cutter embodying my improvements. Fig. 2 is a view of the sliding carriage detached. Fig. 3 is a cross-section on the line at as, Fig. 1, looking in the direction-of the arrow y. Fig. 4 is an edge view of a somewhat modified form. Fig. 5 is a face view of the cutter shown in Fig. 4.

In the drawings, A represents the yoke, in which are mounted the other parts-namely, the fixed cutter, the sliding cutter, and the levers for operating the latter. This yoke is formed with a rectangular centrally-open part, A, having grooves a a in the sides of the opening a therein, to serve as ways for the sliding cutter.

B represents the fixed cutter, fastened securely to the part A at the outer end of the opening and near one of the faces of the said part A.

The sliding cutter is represented by C. It is substantially rectangular in cross-section, and is cast with tongues c c on its sides, adapted to fit the grooves a a. At the rear end of the cutterpiece there is a screw-th readed socket, within which is fastened a screw-threaded stem, D, carrying a U-shaped stirrup, D.

E E are levers pivoted to the yoke or supporting part A. They are adapted to receive wooden handles, which can be inserted into sockets formed in the outer ends of the levers.

G G are toggle-levers, each pivoted at one end to one of the levers E, and at the other end pivoted within the the U-shaped part D. They are pivoted to the latter by means of a bolt or screw, which can be readily withdrawn when it is necessary to sharpen the cutter or adjust its throw.

In the construction shown in Figs. 1 and 3 the yoke part A is formed with an extended part, A, at the inner end, through which there is an aperture for the passage of the sliding cutter. The handle-levers E E are pivoted at their ends to this extended part at e e. The toggle-levers in this case are pivoted to the handle-levers E E by means of inwardly-projecting ears or lugs F F, through which pass pivots ff. These ears FF not only carry the pivots of the toggle-levers, but also act as stops to prevent the handles from hein g forced too close together.

In the construction shown in Figs. 4 and 5 the yoke part is depressed, as shown at A and to the inner end of this depressed portion the handle-levers E E are pivoted at points somewhat distant from their forward ends, and the toggle-levers are pivoted at the forward ends of the handle-levers The toggle-levers, however, in this construction, as in the other, are pivoted on the central line of the cutter by means of the adjusting-screw and stirrup D. When the cutter is going forward it moves with gradually-decreased speed,but increased power, and this power is all utilized, for the movable parts are all arranged in substantially the same plane.

I am aware that bolt-cutters have been con* structed with intermediate levers, each pivoted to one of the handles, and also to the cuttercarriage, and I do not broadly claim such c011 structions as my invention; but in the cutters with which I have been acquainted the intermediate levers have been pivoted at two or more points to the cutter-carriage, and have been situated in planes other than the central plane of said carriage.

I have found that by arranging the parts as described I can apply the power to much greater advantage than when the levers are pivoted and situated as heretofore.

My device dispenses with much of the metal heretofore used in constructing bolt-cutters of the same general character. A long carriage the levers E E, pivoted to the part A. and to the levers G G, as set forth.

2. In a bolt-cutter, the combination ot' the following elements, namely: the yoke part A, having a central opening and the grooves a a, the levers I) I pivoted to the yoke and formed with the lugs F F on their inner sides, the cutter 0, having the tongues 0 c, the screwstem 1), carrying the U-shaped stirrup I), and the toggle-levers (l (l, pivotally connected to said stirrup on the central line of the part 0, as set forth.

In testimony \vhereot'l atlix my signature in presence oi two witnesses.

(fllltlS'lUlIllflR W. LEVALLEY.

\\'itiiesses:

.I. ll. RANDALL,

Jonx .l. MotLoi n. 

